Retransmission Timeout Considerations

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Last updated 2016-05-26 (latest revision 2015-11-23)
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Each implementation of a retransmission timeout mechanism must balance correctness and timeliness and therefore no implementation is suits all situations. This document provides for high-level guidance for retransmission timeout schemes appropriate for general use in the Internet. Within the guidelines, implementations have latitude to define particulars that best address each situation. Terminology


Mark Allman (

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